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Information security is the rapidly rising area of concern in today's world of network technology. Traditionally, secure access to information is guarded by combination of username and password. The idea of graphical password as an alternative to text based approach was proposed by Blonder in 1996 motivated by the fact called as “picture superiority effect” i.e. tendency of human brain to memorize...
A technique of online face authentication has been proposed which may be used for the user identification. Pre processing of acquired image has been accomplished through consecutive steps viz. image reading and subsequent adjustment of illumination level and feature extraction from a certain portion of the clipped image to form a template. Provision for automatic uploading of the template through...
A CAPTCHA is a technique that is used to prevent automated programs from being able to acquire free e-mail or online service accounts. However, as many researchers have already reported, conventional CAPTCHAs could be overcome by state-of-the-art malwares since the capabilities of computers are approaching those of humans. Therefore, CAPTCHAs should be based on even more advanced human-cognitive-processing...
CAPTCHA is a technique that is used to prevent automatic programs from being able to acquire free e-mail or online service accounts. However, as many researchers have already reported, conventional CAPTCHA could be overcome by state-of-the-art malware since the capabilities of computers are approaching those of humans. Therefore, CAPTCHA should be based on even more advanced human-cognitive-processing...
CAPTCHA is a technique that is used to prevent automatic programs from being able to acquire free e-mail or online service accounts. However, as many researchers have already reported, conventional CAPTCHA could be overcome by state-of-the-art malware since the capabilities of computers are approaching those of humans. Therefore, CAPTCHA should be based on even more advanced human-cognitive-processing...
Graphical passwords are an alternative authentication method to alphanumeric passwords in which users click on images to authenticate themselves rather than type alphanumeric strings. This research aims to study the usability features of the recognition base graphical password methods available and extract the usability features of the existing methods. In this paper we study the recognition base...
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